Stove construction



F. A. BAUGHAN STOVE CONSTRUCTION June 18, 1957 Filed June '1954 u/A/Ef? FOC/(HBLYJ MOUNTED UN BUR/vm Fmg- INI/Wma Z Bang/z cm,

United States Patent O sTovE CONSTRUCTION Fred A. Baughan, Chicago, Ill. Application June As, 1954, serial No. 434,283

2 claims. (ci. 15s-91) This invention relates, generally, to the construction of oil stoves and it has particular relation to such stoves for use on railway cabooses and the like.

Among the objects of this .invention are: To provide for rockably mounting an oil burner in a stove Vfor use on a railway caboose and the like so that it will remain level when the support thereforand thecaboose rock from side to side; to rprevent the entrance of extraneous airf'into the stove while mounting the burner `for rocking movement; to limit the rocking movement ofthe burner; to accommodate transverse expansion and contraction of the burner; to employ a combination of conical and knife edge pivots for this purpose; and to ilexibly connect a fuel supply `to the burner so as not to interfere with its free rocking movement.

Other objects of this invention will, in part, be obvious and in part appear hereinafter.

This invention is disclosed in the embodiment thereof shown in the accompanying drawings and it comprises the features of construction, combination of elements and arrangement of parts which will be exemplified in the construction hereinafter set vforth `andthe scope .of the application of which will be indicated in the appended claims.

For a more complete understanding of the nature and scope of this invention reference can be had to the following detailed description, taken together with the accompanying drawing, in which:

Figure 1 is a longitudinal sectional View, taken generally along the line 1-1 of Figure 2, and showing certain details of construction of an oil burner and the manner in which it is rockably mounted in accordance with this invention;

Figure 2 is a top plan View of the oil burner shown in Figure 1, including a portion of the supporting burner plate;

Figure 3 is a transverse sectional View taken generally along the line 3-3 of Figure 2;

Figure 4 is a vertical sectional view along the line 4-4 of Figure 3;

Figure 5 is a vertical sectional View taken generally along the line 5-5 of Figure 3, this figure and the preceding gure being shown at enlarged scales; and

Figure 6 is a view in side elevation of the knife edge pivot shown in Figure 4.

Referring now particularly to Figures 1, 2 and 3 of the drawing, it will be observed that the reference character 10 designates a burner plate which preferably is formed of cast iron and is arranged to be horizontally stationarily mounted on a caboose or the like. It will be understood that the burner plate 10 ordinarily forms the lower portion of the oil stove and that there is a super structure extending thereabove having a top which can be used for cooking purposes if desired. The burner plate 10 is provided with a rectangular opening 11 having ribs 12 formed integrally therewith at the ends of the opening. The ribs 12 extend longitudinally of the caboose and these ribs 12 have arcuate surfaces 13 the purpose of which will be set forth presently.

taken generally On opposite sides of the rectangular opening 11 and formed integrally with the burner plate 10 are pedestals 14. One of the pedestals 14 supports a conical pivot 15 and lthe other supports a knife edge pivot 16. As shown in Figure 5 the conical pivot 15 cooperates with a downwardly opening conical seat 17 in a threaded stud 18. Figure 4 shows a Wedge shaped seat 19 in a stud 20 for cooperation with the knife edge pivot 16. In this manner a burner, shown generally at 22, is pivotally mounted so that it can remain level while the ,cabooseand the burner plate 10 attached thereto rock from side .to side.

The burner 22 is arranged toreceive liquid fuel, such as oil, and is employed for heating the surface of the stove, above referred to, for cooking and space heating purposes. The studs 18 and 20 are located in outstanding upper portions 23 of upstanding arms 24 that are cast integrally with a rectangular burner cradle 25. It will be observed that the burner cradle 25 substantially lls the rectangular opening 11 and that it has ribs 26 cast integrally with its ends that have arcuate end surfaces 27 which are juxtaposed to the arcuate surfaces 26 on the ribs 12 at the ends of the rectangular opening 11 in the burner plate 10. The center of curvature of the arcuate end surfaces 27 and of the arcuate surfaces 13 is located along a line 28, Figure 3, which joins the pivots 15 and 16. The radius is indicated at 29 in Figure l and may be of the order of 6% inches. The reason for providing the juxtaposed arcuate surfaces 13 and 27 is to permit the rocking movement of the burner 23 with respect to the burner plate 10 while at the same time preventing the entrance of extraneous air into the stove past the burner 22, particularly when it is tipped away from the position shown in Figure 1 Where the underside of the burner cradle 25 is in alignment with the underside of the burner plate 10. This construction, while permitting the burner 22 to rock freely, is such that only an extremely small amount of air can enter the stove around the periphery of the burner cradle 25.

It now will be apparent why the conical `pivot 15 in combination with the knife edge pivot 16 -is employed. The conical pivot 15 and its cooperating conical seat 17 serve to prevent movement of the burner 22 transversely of the rocking movement which is permitted by the pivots. By employing the wedge shaped seat 19 in cooperation with the knife edge pivot 16, expansion and contraction of the burner cradle 25 between the pivots can be accommodated. Sufficient clearance is provided between the sides of the burner cradle 25 and the juxtaposed sides of the rectangular opening 11 in the burner plate 10 to prevent binding within the limits of expansion and contraction of the burner cradle 25 that are likely to be encountered.

Centrally located on `the burner cradle 25 is a rectangular burner pot 31 which can be fastened in position by screws 32. The oil to be burned in the burner pot 31 flows through a nozzle 33 to which a flexible conduit 34 is connected. It will be understood that the flexible conduit 34 is connected to a suitable source of fuel and the level of the fuel in the burner pot 31 is controlled by a float valve generally in accordance with conventional practice.

Air for sustaining combustion of the oil in the burner pot 31 is supplied through an inverted W-shaped air manifold 35 the ends of which are placed in communication with the atmosphere through openings 36 in the floor of the burner cradle 25. The central opening 37 on the underside of the air manifold 35 is positioned centrally over the burner pot 31 so that air for sustaining combustion flows upwardly through the openings 36 and the arms of the air manifold 35 to the central opening 37. The air manifold 35 is secured to the floor of the burner cradle 25 by screws 38.

It has been found that there is more uniform distribution of the heat from the burner 22 throughout the stove 3 with which it is associated if openings 39 are provided in the uppermost portions of the air manifold 3S. As indicated by the arrows the air, partly heated, ows outwardly into the space above the burner 22. By means of this secondary air the space above the burner 22 is heated more uniformly. Y Y It is desirable to provide for balancing the burner 22 rather than to attempt to cast the burner cradle 25, the burner pot 31 and the air manifold 35vso precisely that such balancing is not required. For this purpose a cradle balance weight 41 is secured by a screw 42, Figure 3, to the underside of the burner cradle 25,'=the screw-42 being located in a vertical plane including the line 28 interconnecting the pivots and 16. It will be understood that, by loosening the screw 42 and ladjusting the position of the weight 41, it is possible to balance the burner 22 so that it will occupy a levelposition when'the burner plate 10 is level. Y

In order to limitthe rocking movement of the burner 22 in respect to theburner plate 10 the latter is provided with vdepending stops 43, Figure 5, which are located directly below and'centrally of the pedestals 14. A pair of stops 43 is provided underneath each of the pedestals 14 and each pair has for cooperation therewith an arm 44 which extends laterally from a projection 45 on the underside ofthe burner cradle 25.

Since certain changes can be made in the foregoing construction and different embodiments of the invention can be made without departing from the spirit and scope thereof, it is intended that all matter shown in the accompanying drawing and described hereinbefore shall be interpreted as illustrative and not in a limiting sense.

What is claimed as new is:

1. In an oil stove for use in a railwayV caboose or the like where it is subject to sidewise rolling,` in combination, a burner plate adapted to be horizontally stationarily mounted on the caboose and having a rectangular opening, pedestals upstanding from opposite sides of said opening one carrying a conical pivot and the other a knife edge pivot so that a line joining the sameis horizontal, a rectangular cradle in said rectangular opening having upstanding arms along the sides with their upper ends carrying pivot receiving means cooperating with said pivots to: rockably support said cradle and keep it level when said burner plate rocks sidewise, stop means carried by said burner plate and said cradle to limit the rocking movement of the latter with respect to the former, a burner pot carried by said cradle, a flexible conduit connected to said burner pot to supply oil thereto, and an inverted W-shaped air manifold Carried by said cradle and communicating with the atmosphere through openings therein vvith the central portion overlying and opening above the central part of said burner pot.

2. In an oil stove for use in a railway c aboose or the like where it is subject to sidewise rolling, in combination, a burner plate adapted to be horizontally stationarily mounted on the caboose and having a rectangular opening, pedestals upstanding from opposite sides of said opening one carrying a conical pivot and the other a knife edge pivot so that a line joining the same is horizontal, a rectangular cradle inV said rectangular opening having upstanding arms along the 'sides with their upper ends carrying pivot receiving means cooperating with said pivots to rockably support said cradle and keep it level when said burner plate rocks sidewise, said cradle having arcuate end surfaces juxtaposed to the ends of said rectangular opening with their centerV of curvature coinciding substantially with said'line joining said pivots, stop means carried by said burner plate and said cradle to limit the rocking movement of the latter with respect to the former, a burner pot carried by said cradle, a flexible conduit connected to said burner pot to supply oil thereto, and an inverted W-shaped air manifold carried by said cradle and communicating with the atmosphere through `openings therein with the central portion overlying and opening above the central part of said burner pot.

References Cited in the le of this patent France Mar. 27, 1939 

